TY - JOUR
T1 - Sign Flip in the Casimir Force for Interacting Fermion Systems
AU - Flachi, Antonino
AU - Nitta, Muneto
AU - Takada, Satoshi
AU - Yoshii, Ryosuke
N1 - Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/7/21
Y1 - 2017/7/21
N2 - In this work we consider a fermionic chain of finite length. Fermions are allowed to interact and are forced to obey boundary conditions, thus altering the process of condensation. Our goal is to explore how this affects the quantum vacuum energy for this system. We approach this problem by using a self-consistent method and observe a nontrivial behavior in the Casimir force, displaying a switch from an attractive to a repulsive regime. This flip stems from the competition between the attractive contribution from the usual fermionic Casimir effect and a repulsive one coming from the condensate.
AB - In this work we consider a fermionic chain of finite length. Fermions are allowed to interact and are forced to obey boundary conditions, thus altering the process of condensation. Our goal is to explore how this affects the quantum vacuum energy for this system. We approach this problem by using a self-consistent method and observe a nontrivial behavior in the Casimir force, displaying a switch from an attractive to a repulsive regime. This flip stems from the competition between the attractive contribution from the usual fermionic Casimir effect and a repulsive one coming from the condensate.
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U2 - 10.1103/PhysRevLett.119.031601
DO - 10.1103/PhysRevLett.119.031601
M3 - Article
C2 - 28777594
AN - SCOPUS:85026894303
SN - 0031-9007
VL - 119
JO - Physical review letters
JF - Physical review letters
IS - 3
M1 - 031601
ER -